Method of feeding the bolt in shibtgle-fflachines



, UNITED STATES PATENT OFFICE.

WILLIAM WOOD, OF IVESTPORT, CONNECTICUT.

METHOD F FEEDING THE BOLT IN SHINGrIiE-IVIACHINES.

Specification of Letters Patent No. 17,907, dated July 28, 1857.

, to the annexed drawings, making a part of this specification, inwhich- Figure l, is a vertical section of my improvement taken in theline Fig. 4, c and looking in the direction indicated by arrow l. Fig.2, is also a vertical section of ditto, taken in the line (y) Fig. 3 isa vertical sect-ion of ditto taken in the line (a) (e) and looking inthe direction indicated by arrow 2. Fig. 4 is a plan or top view ofditto.

Similar letters of reference indicate corresponding parts in the severalfigures.

This invention relates to an improved feed movement to be applied tothat class of machines in which a reciprocating knife is employed to cutor rive the shingles from the bolt.

The object of the invention is to feed the bolt, by a simple mechanism,obliquely to the knife, the ends of the boltbeing moved alternately`forward so that the shingles will be cut or rived direct from the boltin proper taper form.

The invention consists in the peculiar means employed for effecting theabove object.

To enable those skilled in the art to fully understand and construct myinvention, I will proceed to describe it.

A, A, represent two oblique posts, the lower ends of which are securedto a proper base B, and the upper ends connected by a cross tie C.

Between t-he two posts a rhomboidal knife frame D, is placed and allowedto work freely up and down, through the lower cross rail (a) of thelmife frame D, the end of a f lever E, passes. This lever is pivoted toa bar (b) which is screwed to one of the uprights of a frame F, to oneside of which the oblique posts A, A, are attached.

On the frame F the parallel guide bars (0) (c) are attached. These bars(c) have each a metal plate (d) attached, said plates projecting beyondthe outer edges of the bars. On the bars (c) (c) a transverse bar Gr isplaced the ends of said bar having each a hook (e) attached, which hookswork under the plates (d) as shown plainly in Fig. l. The hooks andplates serve as guides to the bar G.

I-I, I-I, represent two screws which are fitted in the upper part of theframe F at a suitable distance apart. The outer end of each screw has apinion placed on it. Through the outer' and upper cross rail (g) of theframe F a cylindrical rod (h) passes, and a circular disk I is placedloosely on this rod. The periphery ofthis disk is divided into siX equalparts, and every alternate part is provided with teeth or cogs (z') theintermediate parts being smooth as shown at The head of the disk I has aratchet attached to it, said ratchet being fitted in the cross rail (g)and having a pawl (Z) catching into or between its teeth.

To the inner surface of the disk I there are six ratchet shapedprojections (m) placed in annular form and connected with the disk7 andon the rod a sleeve or collar J is placed loosely, said sleeve or collarhaving an arm att-ached to it, which arm is connected by a rod K withthe lever E. A spiral spring L is placed on the rod (h) said springkeeping the sleeve or collar J pressed against the inner side of thedisk I.

To the outer side of the bar Gr a plate M is attached. This plate hastwo slots (o) (o) made through it, and screws or pins (p) (p) which areattached to pendant plates g) (g) on the bar, are fitted in the slotsk 0(o). One end of a spring (r) is attached to the plate M, the oppositeend of the spring being attached to the bar Gr. One end' of ,the plate Mis of curved or hooked form as shown at (s) and lits between the threadsof its screw H at the outer side, and the opposite end (t) of the plateiits between the threads of its screw at the inner side as shown clearlyin Fig. l.

The spring (1') has a tendency to keep the ends of the plate M betweenthe threads of their respect-ivescrews.

To the inner side of the bar Gr two dogs N, N, are attached betweenwhich dogs the bolt from which the shingles are cut is secured.

The operation is as follows: As the knife frame D is drawn upward thelever E and rod (le) actuate the arm (n) of the sleeve or collar J and aprojection (Z) on the sleeve or collar J catches against the projections(m) and turns the disk I one sixth of a revolution at each upwardmovement of the knife frame and consequently the toothed portion of thedisk I will gear alternately into the pinions of the screws H, H, andthe screws H will be actuated alternately and the bar Gr, and the boltwhich is attached to it, will be moved or fed obliquely forward, theends of the bolt being moved alternately toward the knife frame.

Motion is given the bar G from the screws H, through the medium of theplate M, and the bar may be moved back at any time by disengaging saidplate from the screws which is done by simply pressing it one side byhand.

I am aware that in shingle machines of this description the bolt hasbeen previously fed obliquely forward, the ends of the bolt beingactuated or moved alternately, and I therefore do not claim in theabstract or, irrespective of the means employed for effecting thepurpose, such movement of the bolt, but,

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is,

1. The employment or use of the two screws H H actuated alternately fromthe knife frame I), through the medium of the lever E, rod K, arm (n) ofthe sleeve or collar J disk I provided with ratchet shaped projectionand teeth or cogs and the plate M, the whole being arrangedsubstantially as and for the purpose set forth.

2. I further claim the plate M when arranged and applied to the bar Grsubstantially as shown so that it may be readily disengaged from thescrews when desired for the purpose speci-tied.

WILLIAM WOOD.

Witnesses LYMAN BANKS, SANFORD SHoLns.

